package cn.practice.weibopractice.interceptors;

import lombok.extern.slf4j.Slf4j;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;


@Slf4j
public class LoginCheckInterceptor implements HandlerInterceptor {

    // 登录检测

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        // 获取session
        Object user = request.getSession().getAttribute("user");

        log.debug("user " + user);
        if (user == null) {
            // 未登录，拦截
            log.info("未登录，拦截");
            // 跳转登录页面
            response.sendRedirect("/index.html");
            return false;
        }


        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        HandlerInterceptor.super.postHandle(request, response, handler, modelAndView);
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        HandlerInterceptor.super.afterCompletion(request, response, handler, ex);
    }
}
